K2 Internal Mic Adaptor (IMA) User’s Guide – 23 July 2013
2
Features
• Supports 66 popular 8-pin Foster-connector microphones sold by …
• Alinco
• Elecraft
• Heil Sound
• Icom (iCOM)
• Kenwood
• Ten-Tec
• Yaesu
• Fits between the Front Panel and Control boards.
• Simple “plug-in” installation.
• Jumper selectable external bias with seven resistance choices.
• The deluxe jumper shunts have 300 mil (0.3") tapered handles
.........
• Provides onboard storage for
unused
jumpers, plus one spare.
• A color-printed 3½" × 2⅛" self-adhesive decal is included.
• The two tiny circuit boards have …
• Four copper layers.
• Dual ground planes.
• A built-in spacer.
Specifications
• RoHS compliant PCB and interconnect components.
• 100 mil pitch interconnect components.
• 30 micro-inch gold-plated contact surfaces on …
• J1 (2
×
8 surface mount socket).
• P2 (3
×
7 jumper block).
• S1 .. S6 (jumpers).
Limitations
1. Pin three and pin seven are hardwired. Changing either connection would require modifying the K2.
2. The “Fast” button on Yaesu microphones cannot be wired.
3. The gold plating is only rated for 100 jumper insertion
removal cycles.
